PTU M.Tech Paper 2012 Welding Technology

PTU M.Tech Paper 2012 Welding Technology Punjab Technical University Exam 2012 Welding Technology Test September and March Question Paper Free Download Punjab Technical University Welding Technology Question Papers 2012 PTU M.Tech Question Paper 2012 for all students Previous Year old Past Papers of PTU M.Tech Paper 2012 Welding Technology Punjab Technical University September 2012 and March 2012 Exam M.Tech Sample Model Question Papers Free Download PDF

Welding Technology

  1. What do you understand by solidification mechanism. Explain Epitaxial solidification.
  2. What should be the basic characteristics of a power source used for arc welding Explain a thyristor controlled rectifier.
  3. What are crated electrodes. I)iscuss the role of flux ingradients and shielding gases, on electrodes.
  4. What is cold pressure welding. Discuss the mechanism of cold pressure welding. Write the limitations of cold pressure Welding.
  5. What is arc blow. Discuss the mechanism of arc blow. Write the effects and remedies of arc blow.
  6. What is meant by metal transfer. Explain the mechanism of free-flight metal transfer.
  7. Discuss the principle of operation of (}MAW process. Write the advantages and disadvantages also.
  8. Write Notes on:
  9. (a) heat affected zone.
  10. (b) Weld ability.

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